Income Taxes Schedule of the tax effects of temporary differences that give rise to the Company’s deferred tax accounts (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Deferred tax assets:
Accrued compensation	$ 7,655	$ 7,552
Reserves and accruals	3,870	3,475
Inventory	0	1,497
Intangible asset amortization	0	366
Loss and credit carryforwards	20,557	11,432
Total gross deferred tax assets	32,082	24,322
Less: valuation allowances	31,171	20,124
Net total deferred tax assets	911	4,198
Deferred tax liabilities:
Property and equipment depreciation	1,373	1,868
Intangible asset amortization	1,082	0
Other	222	632
Total deferred tax liabilities	2,677	2,500
Net deferred tax asset (liability)	$ (1,766)
Net deferred tax asset (liability)		$ 1,698